Subsurface Scattering tips

Does anyone have any tips on using SSS? Like the appropriate size of the model, lights to use, etc?

Like the appropriate size of the model
Make it the size of the real object. Use 1 bledner unit = 1m or change to metric/imperial units in scene settings
http://cgcookie.com/blender/2012/06/25/creating-realistic-head-blender-part-04/
http://www.youtube.com/watch?v=7Z6aKLUkUGM&feature=player_embedded

But if I was using a human video game model (Yes, I’m bringing this up). How tall would it be then?